JP3217367B2 - How to monitor the speed sensor - Google Patents
How to monitor the speed sensorInfo
- Publication number
- JP3217367B2 JP3217367B2 JP51695793A JP51695793A JP3217367B2 JP 3217367 B2 JP3217367 B2 JP 3217367B2 JP 51695793 A JP51695793 A JP 51695793A JP 51695793 A JP51695793 A JP 51695793A JP 3217367 B2 JP3217367 B2 JP 3217367B2
- Authority
- JP
- Japan
- Prior art keywords
- monitoring
- speed sensor
- rotational speed
- time
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
Description
【発明の詳細な説明】 従来の技術 重畳された直流電圧によってトリガされる電圧のレベ
ルの監視によって回転数センサの欠陥を、すなわち線路
の断線、供給線路に対する短絡等を識別し得る誘導型回
転数センサに対するエラー識別回路は公知である。この
ような回路は図１に詳細に示されている。2. Description of the Related Art An inductive rotational speed which can identify a fault in a rotational speed sensor by monitoring the level of a voltage triggered by a superimposed DC voltage, ie a line break, a short circuit to a supply line, etc. Error identification circuits for sensors are known. Such a circuit is shown in detail in FIG.
図１の上側には１つの回転数センサが符号１で示され
ており、正弦波電圧を矩形電圧に変換する増幅器は符号
２で示されている。この増幅器２の出力側はマイクロプ
ロセッサ３に接続されている。監視のためにこの回転数
センサ１は２つの付加抵抗4,5を有する分圧器に接続さ
れている。抵抗７を備えた線路６を介してマイクロプロ
セッサは回転数センサ１と抵抗７の接続点における電圧
レベルを監視する。線路の断線又は供給線路に対する短
絡の場合には相互接続点における電圧レベルは変化す
る。これはマイクロプロセッサによって識別され、警報
がトリガされるか及び／又は装置系（例えばABS等）の
遮断が行われる。At the top of FIG. 1, one rotational speed sensor is indicated by reference numeral 1 and an amplifier for converting a sine wave voltage into a rectangular voltage is indicated by reference numeral 2. The output side of this amplifier 2 is connected to a microprocessor 3. For monitoring, the rotational speed sensor 1 is connected to a voltage divider having two additional resistors 4,5. Via a line 6 provided with a resistor 7, the microprocessor monitors the voltage level at the connection point of the speed sensor 1 and the resistor 7. In the event of a line break or a short to the supply line, the voltage level at the interconnection point changes. This is identified by the microprocessor and an alarm is triggered and / or a disconnection of the device system (such as ABS for example) takes place.
図１の下側に示されているのはもう１つの回転数セン
サ８に対する同一の第２の監視回路である。このような
公知の回路は、回転数センサないしそのリード線（例え
ば図１中線路９によって示されている）の間の短絡は識
別することができない。Shown at the bottom of FIG. 1 is the same second monitoring circuit for another rotational speed sensor 8. Such known circuits cannot identify short circuits between the speed sensor or its leads (indicated, for example, by line 9 in FIG. 1).
実施例の説明 本発明によれば時折検査線路10を介してマイクロプロ
セッサ３によって回転数センサ１と抵抗７の相互接続点
における電圧レベルが人為的（意図的）に変化される。
短絡が生じているならば、下方の回路の相互接続点11に
おけるレベルも変化し、マイクロプロセッサ３はこれを
スタブのように線路６′を介して識別する。この検査期
間中は上方の回路の線路６を介した監視は抑圧されなけ
ればならない。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the invention, the voltage level at the interconnection point of the speed sensor 1 and the resistor 7 is changed artificially (intentionally) by the microprocessor 3 via the test line 10 from time to time.
If a short circuit has occurred, the level at the interconnection point 11 of the lower circuit also changes, and the microprocessor 3 identifies this via the line 6 'as a stub. During this test, the monitoring of the upper circuit via line 6 must be suppressed.
図２には前記検査経過期間に関するダイヤグラムが示
されている。時点t1までは回転数センサ１と抵抗７の間
の相互接続点は高電位である。その後線路10を介したレ
ベルは０に低下する。この場合ＡからＢまでの過渡領域
においては障害を避けるために速度測定が阻止遮断され
る。その他にＣの期間においては破損識別が遮断され
る。例えば300msの持続時間の検査パルス期間の間にマ
イクロプロセッサは線路６′を介して（−短絡を前提と
して−）レベル変化によって当該の短絡を識別する。FIG. 2 shows a diagram relating to the elapsed test period. Until time t1, the interconnection point between the speed sensor 1 and the resistor 7 is at a high potential. Thereafter, the level via line 10 drops to zero. In this case, in the transition region from A to B, the speed measurement is interrupted in order to avoid disturbance. In addition, during the period C, the damage identification is interrupted. During a test pulse duration of, for example, 300 ms, the microprocessor identifies the short circuit by means of a level change (assuming a short circuit) via line 6 '.
フロントページの続き (72)発明者 シュヴァーベ，ウルリッヒ ドイツ連邦共和国 71254 ディツィン ゲン ディーツェンブルンナー シュト ラーセ 60 (72)発明者 ディトマール，クリスチアン ドイツ連邦共和国 70825 コルンター ル―ミュンヒンゲン フィヒテシュトラ ーセ 14 (72)発明者 ブランク，マルティン ドイツ連邦共和国 75438 クニットリ ンゲン ハウプトシュトラーセ 65 (72)発明者 プラート，トーマス ドイツ連邦共和国 71679 アスペルク メークリンガー シュトラーセ 80 (56)参考文献 特開 平４−366766（ＪＰ，Ａ) 特開 昭61−3067（ＪＰ，Ａ) 実開 昭60−10400（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01P 21/02 G01P 3/42 Continued on the front page (72) Inventor Schwabe, Ulrich Germany 71254 Ditzingen Dietzenbrunner Strasse 60 (72) Inventor Dittmar, Christian Germany 70825 Colenter Le-Münchingen Fichteststraße 14 (72) Invention Blank, Martin, Germany 75438 Kunitlingen Hauptstrasse 65 (72) Inventor Prato, Thomas, Germany 71679 Asperk Mecklinger Strasse 80 (56) References JP-A-4-366766 (JP, A) JP-A-61 -3067 (JP, A) Fully open 60-60400 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G01P 21/02 G01P 3/42
Claims (1)
直流電圧信号を重畳し、 監視時点における重畳に起因する電圧レベルの監視によ
ってエラーを識別する、２つまたはそれ以上の誘導型回
転数センサの監視方法において、 少なくとも２つの回転数センサの間か、ないしはそれら
の給電線路の間の短絡を監視するために、検査期間中に
おいて時折外部から１つの回転数センサの１つの極に、
レベルを変化させる検査パルスを供給し、 少なくとも１つのさらなる回転数センサの監視時点にお
いて、前記供給により電圧レベルの変化が生じているか
否かを監視することを特徴とする回転数センサの監視方
法。1. Two or more inductive rotational speed sensors which superimpose a DC voltage signal on each of the AC voltage signals to be evaluated and identify errors by monitoring the voltage level resulting from the superposition at the time of monitoring. Monitoring method, in order to monitor a short circuit between at least two rotational speed sensors or between their power supply lines, from time to time externally to one pole of one rotational speed sensor during a test,
A method for monitoring a rotational speed sensor, comprising supplying a test pulse for changing the level and, at the time of monitoring at least one further rotational speed sensor, monitoring whether a change in the voltage level has occurred due to said supply.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4211622A DE4211622A1 (en) | 1992-04-07 | 1992-04-07 | Procedure for monitoring speed sensors |
| DE4211622.8 | 1992-04-07 | ||
| PCT/DE1993/000249 WO1993020452A1 (en) | 1992-04-07 | 1993-03-18 | Method of monitoring rpm sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08502123A JPH08502123A (en) | 1996-03-05 |
| JP3217367B2 true JP3217367B2 (en) | 2001-10-09 |
Family
ID=6456276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51695793A Expired - Fee Related JP3217367B2 (en) | 1992-04-07 | 1993-03-18 | How to monitor the speed sensor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5579235A (en) |
| EP (1) | EP0635135B1 (en) |
| JP (1) | JP3217367B2 (en) |
| DE (2) | DE4211622A1 (en) |
| WO (1) | WO1993020452A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19635440B4 (en) * | 1996-08-31 | 2005-07-21 | Robert Bosch Gmbh | Method and device for monitoring at least one sensor |
| DE19636821A1 (en) * | 1996-09-11 | 1998-03-12 | Teves Gmbh Alfred | Method for testing electrical components and device for carrying out the method |
| WO1999001774A1 (en) * | 1997-07-02 | 1999-01-14 | Siemens Aktiengesellschaft | Diagnostic device for detecting errors in an induction sensor |
| DE19828058B4 (en) * | 1998-06-24 | 2007-08-02 | Robert Bosch Gmbh | Circuit for detecting a line break for a digital signal |
| DE19911526A1 (en) | 1999-03-16 | 2000-09-21 | Bosch Gmbh Robert | Method for monitoring sensor for initiating monitoring phase of evaluation unit by setting signal of given trigger level on output line may be detected in sensor |
| KR100302384B1 (en) * | 1999-07-01 | 2001-09-22 | 김오영 | Digital unified control apparatus and method in automobile electric device |
| WO2001042070A1 (en) | 1999-12-08 | 2001-06-14 | Robert Bosch Gmbh | Method and device for adjusting the braking and/or driving effect on the wheels of a motor vehicle |
| CN102448862B (en) | 2009-06-29 | 2014-01-15 | 三菱电机株式会社 | Elevator device |
| DE102010003254A1 (en) * | 2010-03-25 | 2011-09-29 | Continental Automotive Gmbh | Method for checking short circuit in control unit of motor car, involves checking whether two signals resting at terminal are equal to or under threshold values in relation to voltages, respectively such that defect of sensor is detected |
| EP3334329B1 (en) | 2015-08-14 | 2023-09-13 | Alcon Inc. | Ocular implant with pressure sensor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601449A (en) * | 1983-06-16 | 1985-01-07 | Mitsubishi Electric Corp | Controller for automatic speed change gear for car |
| JPS60128053A (en) * | 1983-12-13 | 1985-07-08 | Nissan Motor Co Ltd | Anti-skid control device |
| DE3541852C2 (en) * | 1985-11-27 | 1997-08-21 | Bosch Gmbh Robert | Monitoring arrangement for speed sensors |
| GB9002436D0 (en) * | 1990-02-03 | 1990-04-04 | Grau Ltd | Control system |
| US5109675A (en) * | 1990-10-10 | 1992-05-05 | Westinghouse Electric Corp. | Valve position sensing circuit |
| IT1245044B (en) * | 1991-04-09 | 1994-09-13 | Sgs Thomson Microelectronics | SHORT-CIRCUIT DETECTION CIRCUIT IN DRIVING DEVICES OF INDUCTIVE LOADS |
| US5291578A (en) * | 1992-06-15 | 1994-03-01 | First Switch, Inc. | Apparatus for controlling a vehicle fuel pump |
| US5406485A (en) * | 1993-11-09 | 1995-04-11 | Delco Electronics Corp. | Method and apparatus for detecting faulty operation of a wheel speed sensor |
-
1992
- 1992-04-07 DE DE4211622A patent/DE4211622A1/en not_active Withdrawn
-
1993
- 1993-03-18 EP EP93905202A patent/EP0635135B1/en not_active Expired - Lifetime
- 1993-03-18 DE DE59304364T patent/DE59304364D1/en not_active Expired - Lifetime
- 1993-03-18 JP JP51695793A patent/JP3217367B2/en not_active Expired - Fee Related
- 1993-03-18 WO PCT/DE1993/000249 patent/WO1993020452A1/en active IP Right Grant
- 1993-03-18 US US08/318,740 patent/US5579235A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5579235A (en) | 1996-11-26 |
| EP0635135B1 (en) | 1996-10-30 |
| WO1993020452A1 (en) | 1993-10-14 |
| JPH08502123A (en) | 1996-03-05 |
| DE59304364D1 (en) | 1996-12-05 |
| EP0635135A1 (en) | 1995-01-25 |
| DE4211622A1 (en) | 1993-10-14 |
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